diff options
| author | Like Xu <like.xu@linux.intel.com> | 2022-04-11 18:19:32 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-08 04:47:45 -0400 |
| commit | 39a4d779546a993c53cea28e659e8edc9f868af0 (patch) | |
| tree | 9888a7f89d02f2bc905a5294c01e618ef8312051 /arch/x86/events/core.c | |
| parent | 69e575dd4fba51dca9f25db7b2033d730699e7ff (diff) | |
perf/x86/core: Pass "struct kvm_pmu *" to determine the guest values
Splitting the logic for determining the guest values is unnecessarily
confusing, and potentially fragile. Perf should have full knowledge and
control of what values are loaded for the guest.
If we change .guest_get_msrs() to take a struct kvm_pmu pointer, then it
can generate the full set of guest values by grabbing guest ds_area and
pebs_data_cfg. Alternatively, .guest_get_msrs() could take the desired
guest MSR values directly (ds_area and pebs_data_cfg), but kvm_pmu is
vendor agnostic, so we don't see any reason to not just pass the pointer.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Message-Id: <20220411101946.20262-4-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/events/core.c')
| -rw-r--r-- | arch/x86/events/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index a9ebd096dfb4..330825160b9a 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -693,9 +693,9 @@ void x86_pmu_disable_all(void) } } -struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr) +struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr, void *data) { - return static_call(x86_pmu_guest_get_msrs)(nr); + return static_call(x86_pmu_guest_get_msrs)(nr, data); } EXPORT_SYMBOL_GPL(perf_guest_get_msrs); |